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 Microbial diversity in Frenulata (Siboglinidae, Polychaeta) species from mud volcanoes in the Gulf of Cadiz (NE Atlantic)
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/4449

title: Microbial diversity in Frenulata (Siboglinidae, Polychaeta) species from mud volcanoes in the Gulf of Cadiz (NE Atlantic)
authors: Rodrigues, Clara F.
Hilario, Ana
Cunha, Marina R.
Weightman, Andrew J.
Webster, Gordon
keywords: Frenulata
Siboglinidae
Bacteria
Gulf of Cadiz
issue date: 2011
publisher: Springer Verlag
abstract: Frenulates are a group of gutless marine annelids belonging to the Siboglinidae that are nutritionally dependent upon endosymbiotic bacteria. We have characterized the bacteria associated with several frenulate species from mud volcanoes in the Gulf of Cadiz by PCR-DGGE of bacterial 16S rRNA genes, coupled with analysis of 16S rRNA gene libraries. In addition to the primary symbiont, bacterial consortia (microflora) were found in all species analysed. Phylogenetic analyses indicate that the primary symbiont in most cases belongs to the Gammaproteobacteria and were related to thiotrophic and methanotrophic symbionts from other marine invertebrates, whereas members of the microflora were related to multiple bacterial phyla. This is the first molecular evidence of methanotrophic bacteria in at least one frenulate species. In addition, the occurrence of the same bacterial phylotype in different Frenulata species, from different depths and mud volcanoes suggests that there is no selection for specific symbionts and corroborates environmental acquisition as previously proposed for this group of siboglinids.
URI: http://hdl.handle.net/10773/4449
ISSN: 0003-6072
publisher version/DOI: http://dx.doi.org/10.1007/s10482-011-9567-0
source: Antonie van Leeuwenhoek
appears in collectionsCESAM - Artigos
BIO - Artigos
PT Mar - Artigos

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